Feed-water heater.



' Patented my l5, :902.

K. U U nn B N B nu H m om :FEED WATER HEATER. (Applicacion md Mar. 27,1902.)

(No Modei.)

UNITED STATES PATENT OFFICE.

RAYMOND H. HORNBROOK, OF` CANTON, GHIO.

FEED-WATER HEATER.

SPECIFICATION forming part of Letters Patent No. 704,879, dai-.ed July 15, 1902.

Application inea nach 27,1902. serial ramoner.' un man.)

To all whom, it may concern:

Be it known that I, RAYMOND H. HORN- BROOK, a subject of the King ofGreat Britain and IrelandLand a resident of Canton, Ohio, have inventedcertain Improvements in Feed-Water Heaters, of whichthe following is aspecilication,

The object of my invention is to so con` struct a feed-water heater thatavhigh temperatnre can be imparted to saidgfeed-water by the steam usedfor heatingpurposes, and it' said heating agent is exhaust-steam thelatter can, if desired, be completely condensed.

In the accompanying drawings, Figure 1 is` a longitudinal section of afeed-water heater and condenser constructed in accordance with myinvention. Fig. 2 is a transverse section on the line a. a, 1; and Fig.3 is a transverse section on the line h b, Fig. 1.

The heater has an outer casing l, closed at the opposite ends by convexheads 2 and 3, the latter having a transverse partition 4, whereby theYspace within said partition is divided into two chambers 5 and 6, thelatter chamber communicating with the feed-water t outlet 7 of theheater.

Within the outer cylindrical casing lis an y inner cylindrical casing 9,Awhichis secured at its opposite ends to a pairl oftube-sheets 10 and11, the tube-sheet 10 beinganged at the outer edge and this flange beingbolted or rivi eted to the outer casing 1, while the outerportion of thetube-sheetV 11 is confined between the flanges of thecylindrical casingl near one end of the heater a feed-water-sup-` plyi'ng branchl, thedelivery end of the passage communicating. through opening 16 in thetube-sheets 11 `with the chamber 5 in the head 3.0i the casing. lThe,helical partitionv 12 is preferably'made in the form of an angie-bar,one flange of which-constitutes the partition, the other flange beingbolted or riveted to one of the casings of the heater, preferably to theinner casing 9, whereby the partition is thus properly secured in place.

Between `the opposite tube-sheets 10 and 11 extend-two sets of tubes 17and'19, the tubes 17 communicating at one endwith the chamber 5 ofthehead 3 and the tubes 19 communicating at the same end with the chamber 6of said head, both sets of tubes communicating at the opposite end withthe chamber in the head 2 of the casing..

The tube-chamber 20 of the heater is in communication at one end v' witha steam-inlet branch 2l and at the opposite end with a steam-outletbranch 22, and said tube-chamber also has an outlet branch 23 for theescape of the waterof condensation. Steam entering the chamber 2O at theinlet 21 passes through said chamber in the direction of the arrow Fig.1,` in contact withthe casing 9 of said chamber and with the tubes 17and 19 and `finally escapes through the outlet branch 22,

the water resultingfromthe condensation of vthe steam in the chamber 2Oescaping through the branch 23. The feed-water enters the chamber 14through the branches 15 and travels in a spiral course in the directionof the arrows y around the heated casing 9, passing from said passage 14 into the chamber 5 of the head 3 through the openings 16 in thetubesheet 11. From said chamber 5 the feed-water heater passes in thedirection of the arrows y', through the tubes 17, into the chamberwithin the head 2 4of the casing and from the latter in the direction ofthe arrows y? through the tubes 19 andwinto the chamber 6 of the head 3,from which'it escapes through the outlet branch 7. The water is'thusexposed three timesito the heating action of the steam-Inst,x when it iscirculating around the casing 9 'of the heatingchamber; secondly, whenpassing through the tubes 17, and, lastly,=when passing through thetubes 19. Hence the water is heated to a highy temperature by the steam,and the heating capacity of the apparatusin proportion to its size isvery great.

-At the same time there is a'corresponding condensation of the steamemployed, and'ifthe-heatingagent iseXhaust-steam from an Vengine or pumpI may, if desired, effect complete condensation of the same byintroducing into the discharge IOO branch 22 of the heater a rose orsprayer 24,

communicating with a water-supply pipe 25,

condensation of the steam, which, with the lIC) added supply of water,escapes through the drainage-outlet 23, this drainage, if desired, beingconveyed to a storage-tank to be added to the water-supply for theheater, or, if desired, being conveyed to the supply branches 15 oreither of them.

The securing of the angular partition l2 to the inner casing 9 of theheater serves to stien and strengthen the same and enables it to resisteither bursting or collapse. Hence I am enabled to use comparativelythin metal for said inner casing 9, with corresponding freertransmission of heat from the steam within the casing to the Watersurrounding the same.

In the use of my improved heater the conditions above described may bereversed; that is to say, the feed-water may circulate through thechamber 20, and the steam may take the course prescribed for the water;butA the use of the heater in the manner before set forth is preferred.

I am aware that it has heretofore been proposed to construct feed-waterheaters with steam-chambers containing two sets of tubescommunicatingwith the chambered heads, so that the water is caused to iiow first inone direction through one set of tubes and then in the oppositedirection through the other set, and I am aware also that feed-water hasbeen compelled to flow through spiral passages and that water jets orsprays have been introduced into the steam-inlet passages of feed-waterheaters. I-Ience I do not lay claim to either of these things; but

I claim as my invention and desire to secure by Letters Patentl. Thecombination, in afeed-water heater, of an outer casing having chamberedheads, an inner casing containing a chamber having inlet and outlet andclosed at its opposite ends by tube-sheets whereby said internal chamberis separated from the chambered heads of the casing, tubes connectingsaid sheets and passing through the chamber within the inner casing, andmeans whereby fluid is caused to iiow through the chamber between theinner and outer casings and between the tube sheets of the heater andthrough the tubes of the same, substantially as specified.

2. The combination in a feed-water heater, of the outer casing havingchambered heads, one of which chambers is divided into two parts, aninner casing containing a chamber with inlet and outlet, tube-sheetsclosing the opposite ends of said inner casing, and separating thechamber within the same from the chambers within the heads of the outercas ing, tubes extending through said internal chamber and connectingthe oppositetubesheets, both sets of tubesheets communicating with thechamber in one of the heads, and each setvof tubes communicating withits respective chamber in the other head, one of the latter chambersbeing in communication with the annular space between the inner andouter casings and between the tubesheets of the heater, and the otherbeing in communication with the supply or discharge branch,substantially as specified.

3. rlhe combination in a feed-water heater, of an out-er casing havingchambered heads, an inner casing containing a chamber with inlet andoutlet, tube-sheets closing the opposite ends of said casing, andseparating the saine from the heads of the outer casing, tubesconnecting said tube-sheets, a helical partition whereby the annularchamber be- .tween the inner and outer casings is formed into a spiralpassage, and communication between said passage and one of the chamberedheads of the outer casing, substantially as specified.

Il. The combination in a feed-water heater, of inner and outer casings,with a helical par tition forming the annular chamber between saidcasings into a spiral passage, said partition consisting of an angularbar having one of its flanges secured to one of the casings, the otherflange forming the partition, substantially as specified.

5. The combination in afeed-water heater, of inner and outer casings,with a helical partition forming the annular chamber between saidcasings into a spiral passage, said partition consisting of an angularbar having one of its iianges secured to the inner casing, sub- ARAYMOND H. HORNBROOK.

Vitucsses:

-A. S. GRIFFIN, I-I. F. AKE.

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